<!DOCTYPE html>
<html>
<head>
<script>

function boom()
{
  var root = document.documentElement;
  root.contentEditable = "true";
  document.removeChild(root);
  document.appendChild(root);
  document.execCommand("insertunorderedlist", false, null);
  document.execCommand("inserthtml", false, "<span></span>");
  document.execCommand("outdent", false, null);
}

</script>
</head>

<body onload="boom();"></body>
</html>
